Heat sink

ABSTRACT

A heat sink includes a main body, a base formed on a bottom of the main body, and a conducting member attached to a bottom of the base. The heat exchange coefficient of the conducting member is higher than the heat exchange coefficient of the base.

BACKGROUND

1. Technical Field

The present disclosure relates to a heat sink.

2. Description of Related Art

Heat sinks are mostly made of aluminum or copper. Generally, heat sinks made of aluminum are used more often than those made of copper for cost effectiveness. However, for heat dissipation, the heat sinks made of aluminum are not as efficient as heat sinks made of copper. As a result, heat sinks that efficient both in heat dissipation and in buisking cost are needed.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, all the views are schematic, and like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is an exploded, isometric view of an exemplary embodiment of a heat sink.

FIG. 2 is an assembled, isometric view of the heat sink FIG. 1.

DETAILED DESCRIPTION

The disclosure, including the accompanying drawings, is illustrated by way of example and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.

Referring to FIG. 1, an exemplary embodiment of a heat sink 1 includes a base 22, a main body 20 extending up from the base 22, and a conducting member 10. In the embodiment, the conducting member 10 is made of copper.

The main body 20 is made of copper, and the base 22 is made of aluminum. A protrusion 220 protrudes down from a bottom of the base 22 extending from the main body 20. The conducting member 10 defines an opening 12 in a center, corresponding to the protrusion 220.

Referring to FIG. 2, in assembly, the conducting member 10 is attached to the bottom of the base 22 and the protrusion 220 of the base 22 extends through the opening 12 of the conducting member 10. In use, the protrusion 220 abuts against an electronic element for dissipating heat generated by the electronic element.

In the embodiment, the protrusion 220 is used to make the conducting member 10 be attached to the base 22 precisely.

In other embodiments, the conducting member 10 can be any shape, and made of other material, such as, graphite.

In this embodiment, the thickness of the conducting member 10 is about 0.3 millimeters. In other embodiments, the thickness of the conducting member 10 can be changed, and the heat dissipation efficiency of the heat sink 1 will be better if the conducting member 10 is thicker.

It is believed that the present embodiments and their advantages will be understood from the foregoing description, and they will be apparent that various changes may be made thereto without departing from the spirit and scope of the description or sacrificing all of their material advantages, the examples hereinbefore described merely being exemplary embodiment. 

1. A heat sink, comprising: a base; and a main body extending up from the base; and a conducting member attached to a bottom of the base opposite to the main body; wherein the heat exchange coefficient of the conducting member is larger than the heat exchange coefficient of the base.
 2. The heat sink of claim 1, wherein the main body is made of copper.
 3. The heat sink of claim 1, wherein the main body is made of aluminum.
 4. The heat sink of claim 1, wherein the conducting member is made of copper.
 5. The heat sink of claim 1, wherein the conducting member is made of graphite.
 6. The heat sink of claim 1, wherein a protrusion extends down from the bottom of the base, and the conducting member defines an opening, the protrusion extends through the opening of the conducting member. 